Shoe-pressing machine



Sept. 25, 1928.

E. E. WINKLE Y EFT AL SHOE PRES SING MACHINE 5 2 4'' m M raw; mmw 1| 1 Km z n 3 m. m m

Patented Sept. 25, 1928.

UNITED STATES P a-TENT OFFICE.

ERAs'rUs E. WINKLEY AND' FRED v. HART, or LYNN, massncnnsl'r'rs,ASSIGNOBB TO UNITED SHOE MACHINERY CORPORATION, or rA'rnnsoN, NEWJERSEY, A COB- IORATION OF NEW JERSEY.

SHOE-PRESSENG MACHINE.

Application flied July 3, 1925, serial No. 42,213. Renewed December 19,1927.-

This invention relates to shoe pressing machines and is illustrated asembodied in a leveling machine of the so-called automatic roll type.

In the use of this type of machine as commonly constructed, the shoe isheld on a jack and oscillated back and forth undera heavilyspring=pressed leveling r'o'll located at the end of a horizontallypivoted arm which permits the roll to yield vertically under the springpressure in accordance with the irregnlarities in contour of the shoesole.

It was found that leveling shoes having high arched shanks the rollmight drop from the forepa-rt' to the shank with a considerable blowinstead of rolling down into the shank with a substantially uniformpressure, and

that in the reverse movement the roll tended to drag the dampsoletowardthe ball line, sometimes resulting. in undesirabledistort-io'n'. To meet this difiic'ulty, there was pro-" vided a camwhich controlled the spring pressure, having depressions into one oranother of which the cam follower fell as the roll 'ass'ed at difi'erenttimes over the ball line of t 1e shoe, thereby relieving a substantialpart or all of the spring pressure as the roll passed over this part ofthe shoe.

However, in the case of mens shoes, for ex ample, which have much morenearly flat bot toms, such variation of the roll pressure was found tobe unnecessary. With this in view, and to provide a leveling machine, ofthe roll pressure type which would be better adapted for treating bothof the types of shoes reterred to. the invention of E. E. VVinkley andH. A. Davenport, described and claimed in Letters Patent No. 1,667,761,granted on May 1, 1928, provided for the use of removable plugs for thedepressionsvin the cam above mentioned, which raised the operativesurface of the cam ats'uch places to the. level of the neighboringportions of the cam.

It is a principal object of the present invention still further toimprove shoe-pressing or leveling" machines in this respect and tonf'ovide simple and conveniently operable means for chai'ig'ii'ig aressu'r'e cycle adapted for one shoe to a cyce adapted for shoe ofdifferent characteristics. To this end the illustrative machine isprovided with two alternative pressure mechanisms permanently in themachine, such that one can be substirated for the other at will. Thusany difliculty due to loss of non-permanent parts of the machine isavoided, and much time can be saved in changing the machine over fromone condition to the other. One of these mechanisms relieves thepressure at the desired points and the other diminishes the relief orentirely prevents relief at some or all of such points. In theembodiment shown, there is provided a primary cam and a cooperatingpressure member operating to transmit pressure to the shoe relieved bysuitable depressions in the cam, and a secondary cam and pressure memberoperating when desired to inhibit pressure relieving movements of theprimary pressure member, which is thus pre-' vented from falling intothe relief depressions in the primary cam.

In one aspect, therefore; the invention consis'tsin .a leveling machinehaving a ressure mechanism with a pressure cycle o'f certaincharacteristics and a mechanism for varying this cycle better to adaptit to the needs of shoes to which these characteristics are not fullyadapted.

In another aspect the invention comprises primary and secondary pressuremechanisms, the latter of which inhibits certain operativecharacteristics of the former.

In another aspect the invention comprises a pressure member arranged tobe governed by either of a plurality of pressure controlling cams atwill.

In another aspect the invention provides means operating automaticallyto decrease the pressure between the shoe and the leveling tool atpredetermined points in the operation of the tool and means adjustableby the operator to modify the operation of the lastnamed means. i

These and other features of the invention comprising certain novelcombinations and arrangements of parts will be understood from thefollowing description of a preterred embodiment thereof selected forpurposes of illustration and shown in the accompanying drawings inwhich,

Fig. 1 shows a fragmentary side elevation of a machine of the typeillustrated in the Letters Patent hereinbefore mentioned with thepresent invention embodied therein, and

Fi 2 is a perspective of a part thereof.

In the disclosed machine, the. shoe 10 is held in a jack comprisingaheel post 12 and a toe post 14 mounted to oscillate upon a rock plane.A heavy spring 24 rests at its lowerhnd upon a link 26 pivoted at 28 onthe frame and having a vertical link 30 pivoted to it at its front end.The upper end of the link 30 is pivoted to the arm 20. The upper end ofthe spring 24 supports'a plunger 32 which is arranged to be forceddownwardly by a lever 34 pivoted at- 36 onthe main frame and connectedby a link 38 to a lever 40 pivoted at 42 on the main frame. The lever 40carries a cam roll 44 at itsend substantially under the link 38 whichcontacts with a cam 46 which is rotated on a shaft 48 once in eachoperation cycle. The'low placesornotches on the cam permit the link 38to drop, releasing the spring 24 and thus diminishing or relieving thepressure on the shoe. The high points of the camraise the link 38 andforce down the spring, thus forcing the roll 18 firmly against the shoe.In other words, the low places correspond to pressure minima, and'thehigh places to ressure ma-Xima.

Fig. 1 shows the machine at the beginning of a leveling operation withthe cam roll 44 .in the notch 50. The cam as shown in Fig: 1

rotates counter clockwise. The high portion to the ball.

the toe down the forepart to the ball line. The low portion 54 releasesthe pressure at the hall line. The hi gh portion 56 provides fortraverse of the roll down the outside of the shank and back again to theball. The low portion 58 provides for a release of pressure at the ballline. The high portion 60 provides for travel of the roll along theoutside of the forepart to the toe and down the inside of the forepartto the ball. The low pprtion 62 provides for a release of pressure atthe ball line again. The high portion 64; provides for a traverse of theroll along the inside of the shanl: to the breast and back again The lowportion 66 provides for a release of pressure at the ball and the highportion 68 fora traverse from the ball down the forepart to the end ofthe operation at the toe. The high portion 68 is shorter than the highportion 52 because the inside of the forepart is considerably shorterthan the outside,

dueto the diagonal position of the ball line.

description. A more detailed description of the mechan sm and of theoperation thus far descrlbed will be found in the LettersPatenthereinbefore mentioned.

The above described cycle of operation is that used upon h1gh archedshoes, 1n particular, womens shoes. In leveling such shoes,

release of leveling pressure at the ball line is advisable to insureagainst breakage of the last as the roll passes over the ball linetoward the breast, at which time it tends to fall down the steep shankwith a severe blow; and conversely, to insure against damage to the shoedue to dragging on the dampened sole as the roll is crowded up over theball line under pressure.

In the case of shoes having flatter bottoms, as in mens shoes, it isunnecessary and in many cases prejudicial to the best leveling torelieve the pressure as described above. Accordingly, to avoid undesiredpressure relief, there is mounted integrally with the cam 46 on thesameshaft 48 ,a smaller cam 70 having, as shown, only one low portion72, the. re mainder of its periphery being circular. This cam turns withthe cam l6 and cooperates with a roll 7 l'on the end of an arm 7 6pivoted at 78 to the lever 40. A manually operated gravity latchSO ispivoted to the lever 40. When this latch is in the position shown inFig. 1. it is out of contact with the arm 76 and free relative pivotalmovement between the arm 76 and the lever 40 is permitted. hen, however,the latch is thrown over to the position shown in Fig. 2, it contactswith the arm 76 as shown in Fig. 2 and thus limits upward movement ofthe arm 76 relatively to the lever 40. There being no low places in thecam 70' corresponding to the low places of the cam 46 except thedepression 72 corre sponding to the depression 50, the arm 7 6, when thelatch is in the Fig. 2 position, will hold up the lever 40 and preventthe roll 44. from falling into the other low portions of the cam L6 asthey come around, thus maintaining pressure on the shoe during the wholeopera tion, while when in the Fig. 1 position it is ineffective in thisrespect. The head 82 of the latch is heavy and holds the latch in eitherof its two positions as placed by the operator. The lever 40 and the arm76 may be regarded as constituting together a compound lever arm.

Thus the machine can be used interchangeably to level shoes having higharched shanks in the case of which certain pressure relief is desiredand also to level flat bottomed shoes in which such pressure reliefisunnecessary'or undesirable, without any loss of time on the part of theoperator in inserting parts into the machine or in hunting for them ifmischine comprises two alternative pressure mechanisms, at primary and asecondary mechanism, both mounted as permanent portions of the machineand comprising respectively the cams 46 and 7 0, the latter of which inhibits certain characteristics of the former. From another point of viewit may be said that the lever 40- and its pressure applying connectionsare arranged to be governed by either of the cams 46 and at will. Thesecams obviously effect pressure cycles of essentially differentcharacteristics, by the term cycle being meant herein the history ortime-graph of the pressure during a leveling operation on a particularshoe.

Having described our invention, what we claim as new and desire tosecure by Letters Patent of the United States is 1. In a machine of theclass described, means for holding a shoe and a tool relatively movableto cause the tool to treat successive portions of a shoe progressively,a pressure mechanism for effecting a predetermined cycle of variablepressure between the shoe and the tool as they move relatively, andmeans operatively connected with said pressure mechanism andadjustableat the will of the operator to vary the quantitative relationsbetween different parts of the pressure cycle according to therequirements of a given shoe.

2. In a shoe leveling machine, means for holding a shoe and a levelingtool relatively movable to cause the tool to treat successive portionsof a shoe progressively, a pressure mechanism for efi'ecting apredetermined cycle of variable pressure between the shoe and the toolas they move relatively, and means operatively connected With saidpressure mechanism and adjustable at the will of the operator to varycertain portions only of the pressure cycle according to therequirements of a given shoe.

3. In a shoe pressing machine, means for holding a shoeQa tool arrangedto press the shoe, and a plurality of alternative pressure mechanismspermanently mounted in the machine for creating pressure between thetool and shoe, arranged for the substitution of one for the other at thewill of the operator.

4. In a shoe pressing machine, means for holding a shoe, a tool arrangedto operate progressively over the shoe to press it, a pressure mechanismhaving a pressure cycle of certain characteristics, and a mechanism forinhibiting certain of these characteristics as regards selected shoes. 7

5. In a shoe pressing machine, means for holding a shoe, a tool arrangedto operate progressively over the shoe-to press it, a pressure mechanismhaving a pressure cycle of certain characteristics, and a mechanism formodifying certain only of these characteristics as regards selectedshoes.

6. In a shoe pressing machine, means for holding a shoe, a tool arrangedto operate progressively over the shoe to press it, a pressure mechanismfor diminishing the pressure 'at predetermined points of the pressurecycle,

and a mechanism for modifying the diminution of pressure at certain ofsuch points, while leaving unaltered those portions of the cycle otherthan such points.

7. In'a shoe pressing machine, means for holding a shoe, a tool arrangedto operate progressively over the shoe to press it, :1 pressuremechanism for substantially relieving the pressure at predeterminedpoints of the pressure cycle, and a mechanism for inhibiting the reliefof pressure at certain of such points.

8. In a machine of the class described, means for holding a shoe and atool relatively movable to cause the tool to treat successive portionsof a shoe progressively, a pressure mechanism comprising a cam fordiminishing the pressure between the shoe and the tool at predeterminedpoints of the pressure cycle, and a second cam for inhibiting theaction'of the first-n amed cam'at certain of such points.

9. In a shoe leveling machine, means for holding a shoe, a tool arrangedto operate progressively over the shoe under pressure, a cam foreffecting a predetermined cycle of pressure between the shoe and thetool during a pressing operation, a second cam for effecting a differentpredetermined cycle of pressure between the shoe and tool during apressing operation, and means for placing either cam at will inoperation on a particular shoe.

10. In a. shoe leveling machine, means for holding a shoe, a toolarranged to operate progressively over the shoe under pressure, a camfor effecting a predetermined cycle of pressure between the shoe and thetool during a pressing operation, a second cam for effecting a differentpredetermined cycle of pressure between the shoe and tool during apressing operation, and a mechanism arranged to cooperate with eithercam at Wi ll to cause that cam to control the on a particular shoe.

11. In a shoe leveling machine, means for holding a shoe, a toolarranged to operate progressively over the shoe under pressure, a camfor effecting a predetermined cycle of pressure between the shoe and thetool during a pressing operation, a second cam for effecting a differentpredetermined cycle of pressure between the shoeand tool-during apressing operation, and a lever mechanismarranged to cooperate wit-heither cam at will to cause that cam to control the pressure cycle on .aparticular shoe.

12-. In a shoe pressing machine, means for holding a shoe, a toolarranged to operate progressively over the shoe under pressure, a camfor effecting a predetermined cycle of pressure between the shoe and thetool during a pressing operation, a second cam for pressure cycleiefiecting -a .prede'termined pressure cycle which lacks: certainlot"the :pressure-nnmma of the first na'med cycle, and means for HlZlllZi-ng either cam atwill in operation upon a operationol' the tool,andmeans adjustable at'theflwill {of the operator to modify the oipe.;tion of saidlast-named means at a plurality 01" such points withoutdisturbing the remainder of the cycle. 1 7 V 14, in a machine oithe-class described, means. for holding ashoe and a. tool constructedand arranged for relative movement tocau-se the tool to treat successiveportions of the shoe progressively under pressure, means operatingautomatically torelieve the pressure at predetermined points in theoper-. ation oi the tool,'and means adjustable at the will of theoperator to prevent the operation of said lastsnamed means. I 15. In ashoe pressing machine, means for holding a shoe, atool arrangedtooperate progressively over the shoe under pressure, a lever forimparting pressure to the tool and shoe, a cam for controlling the leverin accordance with a predetermined pressure cycle, a second cam forcontrolling the lever in accordance'with a diiferent predeterminedpressure cycle, and means for causing either cam at will to control thelever. 16. In a machine of the classdescribed, means for holding a shoeand a tool relatively movahleto cause the tool to treat successivepressing machine, means for holding a shoe, a tool arranged to operateprogressively over the shoe under pressure, a

lever for imparting pressure to the tool and shoe, a cam for controllingthe lever in accordance with a predetermined pressure cycle, thecamhaving depressions into which the lever falls to effectpressure-n'iinima, and a second cam operative at will to prevent thefalling of the lever into certain of the depressions in operating on aparticular shoe.

1,8. In a shoe pressing machine, means for holding a shoe, a toolarrangedto operate progressively over the shoe under pressure,

. a'lever for creating pressure betweenthetool and shoe havingnacompound arm, and'two cams, one cooperating with each branch oftheicompound lever arm,to produce differing cycles fpressure' betweenthe shoe and the tool at will. v

19'. In a shoe pressing machine, means r'or holding a shoe, a toolarranged to operate pro gressively over the shoe under pressure, aleverfor 02 using pressure between the'tool and shoe,"a cam cooperating withthe lever to produce a predetermined cycle of pressure between the tooland shoe, an. arm movably mounted on the lever, a second cam arrangedtocooperatewith the 'arm to produce a difiercnt cycle olfpressurebetween thetool and shoe,-an.d means for opcratively lockingthe arm tothe lever to renderthesecond cam eillectivef V 20. in a shoepressingmachine, means for holding a sh0e,'a tool ar 'anged to operateprogressively over the shoe under pressure, a lever for vcausingpressure between the tool and shoe, a cam cooperating with the lever toproduce a predetermined cycle of pressure between the -tool and shoe, anarm movably mountedon the lover, a second cam arranged to cooperate withthearm 'to produce a different cycle, of pressurebetween the tool andshoe, and a stop on the lever operable to limit the movements ofthear-mrelatively to the lever to rcnderthe second cam effective.

21. In a shoe, pressing machine, means for holding a shoe, atoolarranged :to operate progressively overtheshoe under pressure, aleverfi'or causing pressure between the tool and the shoe, a camcooperating with the lever to produces predetermined pressure cycle,anarmpivoled to the lever, a second cam cooperating with said arm, and astop which can. be positioned to preventrelative movement of the leverand the arm under the thrust oithe second cam, the second cam beingshaped to lift the lever away from certain low portions of thefirstgnamed cam when the stop is so positioned. 7 v V In, a.machineot.theclass described, means for'holdinga shoe and. a toolarranged for relative movement to cause: the tool to treat successiveportions of the shoe progressively, a pressure mechanism for eii'ectingpressure between thetool and the shoe in apredetermined pressure cycle,means for altering said pressure cycle, and a member operativeat will tocause said last-named means to become effective for any selected cycleof operations of the machine. I i i V In a machine of the classdescribed, means l'or holding a shoe anda tool arranged for relativemovement to cause the tool to treat successive portions of the shoeprogressively, and a pressure mechanism having alf pressure between thetool a'ndthe shoe in a sel cted one of a plurality of pressure cyc es ofessentially differing characteristics at Will,

ativelyoperable members for effecting Lil 24. In a machine of the classdescribed, means for holding a shoe, a tool arranged to operateprogressively along the shoe, a pressure mechanism for effectingpressure be tween the tool and the shoe in a predetermined pressurecycle, and mechanism permanently mounted in the machine for altering aselected portion of the said cycle for operating on a particular shoe.

25. In a shoe pressing machine, means for holding a shoe, a toolarranged to operate progressively along the shoe, a pressure mechanismfor effecting pressure between the tool and the shoe in a predeterminedpressure cycle, and a mechanism comprising a memher having an operativeand an inoperative position in the former of which it is arranged toalter a selected portion of the said cycle for operating on a particularshoe.

26. In a shoe leveling machine, means for holding a shoe, a toolarranged to operate n'ogressively along the shoe, a pressure mechanismfor effecting pressure between the tool and the shoe in a predeterminedcycle, and a mechanism comprising a pivoted member having an operativeand an inoperative position inthe former of which it is arranged toalter the ,said cycle for operating on a particular shoe.

27. In a shoe leveling machine, means for holding a shoe, a toolarranged to operate progressively over the shoe under pressure, a leverfor causing pressure between the tool and shoe, a cam cooperating withthe lever to produce a predetermined cycle of pressure between the tooland shoe, an arm movably mounted on the lever, a second cam arranged tocooperate with the arm to produce a different cycleot' pressure betweenthe tool and shoe, and a member pivoted on the lever and operable tolimit the movements of the arm relatively to the lever. to render thesecond cam effective.

In testimony whereof we have signed our names to this specification.

ERASTUS E. WINKLEY. FRED V. HART.

